Anticoagulant activity according to the aPTT assay. The values in parentheses indicate the final concentrations of each component in the assay. (A) Negative control (deionized water), (B) positive control (heparin, 0.02 U/mL), (C) the extract (0.03%), (D) the EW-AuNPs (0.03% EW and 60 μM HAuCl4 · 3H2O), (E) a combination of heparin (0.02 U/mL) with sample (C), and (F) a combination of heparin (0.02 U/mL) with sample (D).
Kim et al. Nanoscale Research Letters 2013 8:542 doi:10.1186/1556-276X-8-542